Stunning frescos decorate the walls of 16th-century San Maurizio al Monastero Maggiore. Some of the frescos were painted by Bernardino Luini, an artist greatly influenced by Leonardo da Vinci. His highly detailed paintings also decorate the partition wall, which originally created a private area for nuns to attend services. The church once belonged to the neighboring convent of the Benedictine nuns, now home to an archeological museum.